Updated: July 21, 2023

Perilla, also known as Shiso or Japanese Basil, is a popular herb used in many Asian cuisines. It is known for its distinctive aroma and flavor, making it a favorite ingredient in dishes such as sushi and salads. However, like any other plant, perilla can be vulnerable to pests, including worms.

Worms can cause significant damage to perilla plants if left untreated. They can eat through the leaves and stems, leading to stunted growth and reduced yield. Fortunately, there are several effective methods to get rid of worms and protect your perilla plant. In this article, we will explore these methods and provide you with tips on how to keep your perilla plant healthy.

1. Identify the Type of Worm

Before you start treating your perilla plant for worms, it is essential to identify the specific type of worm infestation. There are various types of worms that can affect perilla plants, such as cabbage worms, armyworms, and cutworms. Each worm has its own unique characteristics and methods of attack.

Cabbage worms, for example, are green caterpillars that feed on the leaves of perilla plants. Armyworms, on the other hand, are dark-colored caterpillars that can quickly devour the foliage of the plant. Cutworms are known for their habit of cutting off the stem at ground level.

By identifying the type of worm infestation, you can choose the most appropriate method to eliminate them effectively.

2. Handpicking

One of the simplest and most effective ways to get rid of worms in your perilla plant is by handpicking them. This method is particularly useful if you have a small infestation. Inspect your plants regularly, especially the undersides of leaves where worms tend to hide.

Using gloves or tweezers, carefully remove the worms from the plant and dispose of them properly. Make sure to check the surrounding soil for any worms that may have fallen off the plant. By consistently handpicking worms, you can significantly reduce their population and prevent further damage to your perilla plant.

3. Natural Predators

Introducing natural predators to your garden can help control worm infestations in your perilla plants. Birds, such as sparrows and finches, feed on various types of worms and can be beneficial in reducing their numbers. You can attract these birds to your garden by providing bird feeders or bird baths.

Another natural predator of worms is the beneficial nematode. These microscopic organisms are harmless to humans and plants but prey on many types of worms and pests. You can purchase beneficial nematodes from gardening stores and release them into the soil around your perilla plants.

4. Neem Oil

Neem oil is a popular organic insecticide that can effectively control worm infestations in perilla plants. It works by disrupting the feeding and breeding patterns of worms, leading to their eventual demise. Neem oil is safe to use on edible plants and does not harm beneficial insects.

To use neem oil, dilute it according to the manufacturer’s instructions and spray it onto the affected parts of your perilla plant. Be sure to cover both sides of the leaves thoroughly. Repeat this process every 7-10 days until the worm infestation is under control.

5. Homemade Remedies

If you prefer natural remedies, you can make your own worm-repelling spray using simple household ingredients. One effective homemade remedy is a mixture of water, dish soap, and chili powder or garlic.

To make this spray, mix one teaspoon of dish soap, one teaspoon of chili powder or crushed garlic, and one liter of water in a spray bottle. Shake well before use and spray it directly onto the affected parts of your perilla plant. This homemade spray will repel worms and deter them from feeding on your plants.

6. Crop Rotation

Crop rotation is an essential practice in organic gardening that can help prevent worm infestations in perilla plants. Worms tend to lay their eggs in the soil, and their larvae hatch and feed on the roots and foliage of susceptible plants.

By rotating your perilla plants with unrelated crops every year, you disrupt the life cycle of worms and reduce the chances of reinfestation. Choose crops that are not susceptible to the same types of worms as perilla, such as tomatoes or beans, for your rotation plan.

Conclusion

Worm infestations can be detrimental to the health and productivity of your perilla plants. However, with the right methods and preventive measures, you can effectively eliminate worms and protect your plants.

Remember to identify the specific type of worm infestation, handpick worms when possible, introduce natural predators like birds and nematodes, use neem oil or homemade remedies, and practice crop rotation. By following these steps, you can ensure healthy and thriving perilla plants free from worm infestations.